[bindings] [Bug 381003] New: python3-pykde4 won't install due to broken dep on sip-py3api-11.2 (provided by python3-sip)

[Bernard Gray]

https://bugs.kde.org/show_bug.cgi?id=381003

            Bug ID: 381003
           Summary: python3-pykde4 won't install due to broken dep on
                    sip-py3api-11.2 (provided by python3-sip)
           Product: bindings
           Version: unspecified
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: pykde
          Assignee: kde-bindings at kde.org
          Reporter: bernard.gray at gmail.com
  Target Milestone: ---

Hi all, 
I hope this is the correct place to report this - 
In short, I'm building cleanroom chroots on KDE Neon user/lts packages - about
24 hours ago, I began getting build failures:

> The following packages have unmet dependencies:
>  python3-pykde4 : Depends: sip-py3api-11.2

Digging into this, 
1. python3-pykde4 is an ubuntu provided package
2. the missing dependency is provided by python3-sip, a neon provided package

For reasons beyond my understanding, python3-pykde4 is not taking any notice of
the python3-sip Provides which satisfies the sip-py3api-11.2 dep

# apt-cache policy python3-pykde4
python3-pykde4:
  Installed: (none)
  Candidate: 4:4.14.2-0ubuntu6
  Version table:
     4:4.14.2-0ubuntu6 500
        500 http://aptmirror.debortoli.private:3142/archive.ubuntu.com/ubuntu
xenial/universe amd64 Packages


# apt-cache policy python3-sip   
python3-sip:
  Installed: 4.19.2+dfsg-1+16.04+xenial+build3
  Candidate: 4.19.2+dfsg-1+16.04+xenial+build3
  Version table:
 *** 4.19.2+dfsg-1+16.04+xenial+build3 500
        500 http://archive.neon.kde.org/user/lts xenial/main amd64 Packages
        100 /var/lib/dpkg/status
     4.18.1+dfsg-2+16.04+build3 500
        500 http://archive.neon.kde.org/user/lts xenial/main amd64 Packages
     4.17+dfsg-1build1 500
        500 http://aptmirror.debortoli.private:3142/archive.ubuntu.com/ubuntu
xenial/universe amd64 Packages


** I used this aptitude search command to see what packages provide
sip-py3api-11.2, and their installation status:
# aptitude search '~Psip-py3api-11.2'
i   python3-sip                                          - Python 3/C++
bindings generator runtime library                
p   python3-sip:i386


** So with everything ready to go, deps satisfied by virtual packages, I should
be able to install python3-pykde4:
# apt-get install python3-pykde4
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 python3-pykde4 : Depends: sip-py3api-11.2
E: Unable to correct problems, you have held broken packages.

** there are no held packages
# dpkg --get-selections | grep hold
#

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